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11. Response of Ig-positive cells to Goussia carpelli (Protozoa: Apicomplexa) infections in carp {Cyprinus carpio L.)

Creator:
Steinhagen, D. and Rombout, J.H.W.M.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Coccidia, Cyprinus carpio, immune response, and Ig-positive cells
Language:
English
Description:
The kinetics of Ig-positive cell populations in carp tissues was followed during an infection with the gut dwelling coc-cidian Goussia carpelli Léger et Stankovich, 1921. In cell suspensions of the anterior and posterior sections of the intestine, the proportion of Ig-positive cells increased with the development of the coccidia and peaked during oocyst formation at day 15 post exposure. These results suggest a reaction of the local mucosal immune system. In cell suspensions of pronephros the proportion of Ig-positive cells increased as well, indicating that a systemic immune response was also induced against this intestinal cocci-dian parasite of carp.
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12. Six new species of coccidia (Apicomplexa: Eimeriidae) from endangered Phelsuma spp. geckoes (Sauria: Gekkonidae) of the Black River Gorges National Park, Mauritius

Creator:
Daszak, Peter, Ball, Stanley J., Jones, Carl G., Streicker, Daniel G., and Snow, Keith R.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Coccidia, Apicomplexa, Eimeriidae, Eimeria, Isospora, Reptilia, Sauria, Gekkonidae, Phelsuma, and Mauritius
Language:
English
Description:
Six new species of coccidia are described from endangered Phelsuma spp. geckoes (Sauria: Gekkonidae) endemic to Mauritius, Indian Ocean. Five new species (3 Eimeria and 2 Isospora species) are described from Phelsuma rosagularis Vinson et Vinson; all lack a micropyle and an oocyst residuum, and all have a sporocyst residuum. Oocysts of Eimeria swinnertonae sp. n. are ellipsoidal, 22.2 × 17.8 (20.8-24.8 × 16.8-18.4) μm; SI 1.25; polar granule absent. Sporocysts are ellipsoidal, 8.8 × 7.0 (8.0-9.6 × 6.4-8.0) μm; SI 1.3; Stieda body absent. Oocysts of Eimeria stebbinsi sp. n. are ellipsoidal, 17.4 × 11.7 (16.0-19.2 × 11.2-12.8) μm; SI 1.5; polar granules present. Sporocysts are elongate-ellipsoidal, 7.7 × 4.0 (7.2-8.0 × 3.2-5.6) μm; SI 1.9; Stieda body present. Oocysts of Eimeria raleighi sp. n. are spheroidal to sub-spheroidal, 17.0 × 15.5 (16.0-19.2 × 14.4-16.8) μm; SI 1.1; polar granule present. Sporocysts are sub-spheroidal, 7.8 × 6.6 (7.2-8.0 × 6.4-7.2) μm; SI 1.2; Stieda body absent. Oocysts of Isospora cottinghamae sp. n. are ellipsoidal, 19.8 × 15.5 (17.6-21.6 × 14.4-17.6) μm; SI 1.3; polar granules present. Sporocysts are ellipsoidal, 10.8 × 6.9 (9.6-12.8 × 6.4-8.0) μm; SI 1.6; Stieda body present. Oocysts of Isospora pearlae sp. n. are ellipsoidal, 16.0 × 11.5 (15.2-17.6 × 9.6-12.8) μm; SI 1.4; polar granule present. Sporocysts are ellipsoidal, 8.8 × 5.4 (8.0-9.6 × 4.8-6.4) μm; SI 1.6; Stieda and substieda bodies present. One new Eimeria species is described from the blue-tailed day gecko, Phelsuma cepediana Merrem. Oocysts of Eimeria hartleyi sp. n. are sub-spheroidal to ellipsoidal, 18.2 × 14.5 (16.0-20.8 × 13.6-16.0) μm; SI 1.26; polar granules present. Sporocysts are ellipsoidal to cylindroidal, 7.5 × 5.3 (6.4-8.0 × 4.8-6.4) μm; SI 1.4; Stieda body present. We report the presence of tetrazoic spheroidal to sub-spheroidal oocysts or sporocysts 10.2 × 8.5 (9.9-10.4 × 8.3-8.8) μm; SI 1.2 from an individual of P. cepediana. These oocysts or sporocysts are significantly larger than the Cryptosporidium species so far described from reptiles, and likely represent excretion of spuriously ingested sporocysts of a Sarcocystis or Adelina coccidian.
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13. The endogenous development, described by light and electron microscopy, of Eimeria jamescooki sp. n. (Apicomplexa: Eimeriidae) from the skink Cryptoblepharus virgatus

Creator:
Paperna, Ilan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Coccidia, Eimeria jamescooki, Cryptoblepharus virgatus, Australia, and ultrastructure
Language:
English
Description:
Eimeria jamescooki sp. n. was recovered from the skink Cryptoblepharus virgatus (Garman) found on the grounds of James Cook University, Townsville (type locality), North Queensland, Australia. Oocysts were 17.5-25.0 (22.1 ± 1.9) × 15-22.5 (17.7 ± 1.6) µm and sporocysts 6.25-10.0 (7.9 ± 1.15) × 3.75-6.25 (5.3 ± 1.0) µm in size. Endogenous stages are described from histological material examined by light microscope and by transmission electron microscope. Both merogony stages and gamonts were found to develop in the cytoplasm of the anterior gut mucosal epithelium. Meront progeny were comprised of 10 to 21 merozoites. Premature macrogamonts were elongate; some host cells contained two elongate macrogamonts. Unique to the presently described species were the Golgi ''plaques'' and an enclosure of tubuli. Mature macrogamonts and young oocysts ranged in size from 14 x 7 to 21 × 11 µm and contained two types of wall-forming bodies, canaliculi and amylopectin granules. Differentiating microgamonts conformed in fine structure with that observed in other eimerians. Their sizes increased from 15.4 × 4.2 to 28 × 8.4 µm while dividing to over 70 nuclei, which formed a corresponding yield of microgametes.
Rights:
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14. Two new species of Isospora (Apicomplexa: Eimeriidae) from geckoes of the genus Rhacodactylus (Sauria: Gekkonidae) endemic to New Caledonia

Creator:
Modrý, David, Jirků, Miloslav, and Veselý, Milan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Coccidia, Apicomplexa, Isospora, taxonomy, Gekkonidae, and Rhacodactylus
Language:
English
Description:
Coprological examination of New Caledonian geckoes of the genus Rhacodactylus Fitzinger, 1843 revealed two new species of coccidia. Isospora leachiani sp. n. from R. leachianus (Cuvier, 1829) has oval, colourless oocysts, measuring 21-26 × 16-18.5 µm. Sporocysts are ellipsoidal, 11-12.5 × 6.5-8 µm, with distinct Stieda and substieda bodies. Oocysts of Isospora sykorai sp. n. from R. ciliatus (Guichenot, 1866) are elongately oval to cylindrical, 20-23.5 × 11-14 µm; sporocysts of this species are ellipsoidal, 10-11.5 × 7-8 µm, with a slightly pointed end and Stieda and substieda bodies. Infected geckoes did not exhibit any alteration of their health status.
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15. Ultrastructural study of meronts and gamonts of Choleoeimeria rochalimai (Apicomplexa: Eimeriidae) developing in the gall bladder of the gecko Hemidactylus mabouia from Brazil

Creator:
Paperna, Ilan and Lainson, Ralph
Format:
print
Type:
model:internalpart and TEXT
Subject:
Coccidia, Choleoeimeria rochalimai, fine structure, gall bladder epithelium, Hemidactylus mabouia, and Brazil
Language:
English
Description:
Endogenous development of Choleoeimeria rochalimai (Carini et Pinto, 1926) Lainson et Paperna, 1999 in the gall bladder of Hemidactylus mabouia (Moreau de Jonnes, 1818) front Belem, Brazil is reported at the fine structural level. Meronts and gamonts develop in the epithelial cells of the gall bladder. Infected cells become enlarged and displaced above the epithelial layer. Developing merozoites, dividing meronts and succession of developing microgamonts from initial nuclear division up to final microgamete differentiation are described. In addition to wall forming bodies, mature macrogamonts possess a large inclusion or cisterna with fine granular contents.
Rights:
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